Brake Squeal

It can be caused by glazed pads, missing shims or dirt. Some pads have wear indicators that squeal when worn. Moisture can cause brief noise in the morning. Rust on discs after rain or a wash often causes noise on the first few stops; it disappears as the rust is wiped away. Noise that does not disappear, or grinding, should be checked quickly, because metal-on-metal contact damages discs.

Vibration between pad and disc produces sound.

Persistent squeal or grinding needs inspection. Anti-squeal paste and correct fitting reduce noise.